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Elements, Compounds, Mixtures

Total questions: 27

Worksheet time: 16mins

Name
Class
Date
1.
A pure substance...
a)
is an element or a compound
b)
is an element or a mixture
c)
is a compound or a mixture
d)
is a mixture
2.

A substance made up of two or more chemically combined elements is —

a)

an element

b)

mixture

c)

compound

d)

solution

3.

This diagram represents a _____.

a)

Pure substance that is a compound

b)

Mixture of elements

c)

Pure substance that is an element

d)

Mixture of compounds

4.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
5.

Sweet tea is a mixture where everything is mixed evenly and looks the same.

a)

Heterogeneous Mixture

b)

Homogeneous Mixture

6.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
7.

Which of these is a pure substance?

a)

Bread

b)

Table salt

c)

Garden soil

d)

Sea water

8.
A mixture that appears to be evenly mixed throughout:
a)
an atom
b)
a compound
c)
a homogeneous mixture
d)
a heterogeneous mixture
9.

What do we call a composition that is not uniform throughout?

a)

Homogeneous mixture

b)

Heterogeneous mixture

10.

What is sugar water?

a)

A solution

b)

A suspension

c)

A colloid

11.
Milk is a 
a)
solution
b)
suspension
c)
colloid
12.

What are the different types of mixtures?

a)

Suspension

b)

Solution

c)

Colloid

d)

All of the above

13.
Which of the following are pure substances?
a)
solutions
b)
compounds
c)
homogeneous mixtures
d)
colloids
14.
Which of the following is NOT a pure substance?
a)
milk
b)
oxygen
c)
water
d)
carbon dioxide
15.

If an unknown substance cannot be broken down into simpler substances, it is:

a)

a compound

b)

an element

c)

a homogeneous mixture

d)

a heterogeneous mixture

16.

Two classifications of a pure substance are:

a)

homogeneous and heterogeneous

b)

atoms and elements

c)

elements and compounds

d)

solutions and colloids

17.

Match the following

a)

Element

1.

Hydrogen

b)

Compound

2.

Table Salt

NaCl

c)

homogenous mixture

3.

Ice Tea

d)

heterogenous

mixture

4.

Muddy Water

18.

Dry ice is

a)

-95 degrees (F)

b)

-212 degrees (F)

c)

-109 degrees (F)

19.

Dry Ice is just

a)
the solid form of oxygen
b)
the liquid form of carbon dioxide
c)
the gas form of nitrogen
d)
the solid form of carbon dioxide
20.

Sublimation means

a)
Solid to gas
b)
Gas to liquid
c)
Liquid to gas
d)
Solid to liquid
21.

Iron is a

a)

element

b)

mixture

c)

compound

22.

Sand is a

a)

element

b)

mixture

c)

compound

23.

Mixtures are separated by

a)
filtration
b)
evaporation
c)

magnetism

d)

all of the above

24.

blueberry muffin

a)

heterogeneous mixture

b)

homogeneous mixture

25.
Italian Salad Dressing
a)
heterogeneous mixture
b)
homogeneous mixture
26.
Chicken noodle soup
a)
heterogeneous mixture
b)
homogeneous mixture
27.
a)
Element
b)
Compound
c)
Mixture

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